Concrete surfacing device



Jan. 22,1935. H. G. LYKKEN 1,988,660-

CONCRETE SURFACING DEVICE Filed May 23, 1929 s Shets-Sheet 1 Jan. 22, 1935.

H. G. LYKKEN CONCRETE SURFACING DEVICE 3 Sheets-Sheet 3 Filed May 23, 1929 l w T 11/11/11)??? 1 51/15 511/ I r 1 r1 Patented Jan. 22, 1935 A UNITED STAT E:

oononn'rn "SURFAQING .DEYIQE Henry G. Lykken, Minneapolis, Application May 23, 1929., Serial No. $5,424

s-Clainisi (01. 94-49) t The present inventionr'elateslto thetsurfacing A concave surface may also be formed by "ad-.- of plastic materials, such "as concrete or the-like. jus'ti-ng the angular relation of the surface form- Among the objects-of the invention is to proing --'ele ments oppositely :to the adjustment m'ecvide a novel device for and a novel method of essary to obtain a convex finished surface.

surfacing plastic mater ials, such as for example, Other objects, advantages, features and Icapaconcrete or the like, which may or may not b'e bilitiesare comprehended'by the invention' -as' will placed within or confined in forms- 01' the like. later appear, and as are inherently possessed Thein-vention-comprehends the idea of providthereby. l r ing means for tamping and compacting a plastic Referring to the vdrawings'z a body of material which will knead and work the v Fig. -1 -i's a top plan view of-a devioe constructed body into a homogeneous mass and to finish the in accordance with the invention with parts Tout-i surfacethereof. l away toshow in detail the "construction "of cer The invention also comprehends'the provision tain-of themembers in the device. 1 i of a novel device adapted toride solely upon'the Fig. 2 is a view in 'end (elevation of said 'de-- surfaceof the plastic material to be'compacte'd vice. i a 15 and tamped,-and to tamp and work the material Fig; 3 is a view inside elevation taken in the as'itprogressively moves thereover. plane represented by line 3- f 'oi l igj l ofthe Another object of the invention is to provide a drawings. '1, 4 f novel device in which the surface forming ele- Fig, 4 'discloses fragmentary' views in side :eleiments thereof may be raised and lowered, as vation and showing consecutive-positions of the 20 they are caused'to move over the surface ofa'pl as surface-forming elements at each 90{ tur1iof the tie material, to tamp and 'work the plastic matecammembers which advarice the 'device over. the rial 'toform ahomogeneous-plastic body "of matesur face of a pla'stic material. E ii rial, and to simultaneously finish the surf-ace Referring-now more in particular to' theid'raw thereo'f' to form a smoo'th and even'suriaca ings, the embodimenti 's'elected 'to-illustrate the 25 The invention further coniprehends the idea invention comprises a plurality :of 'c'hannelorpr oviding a novei mean's foradvancingfthe'surshaped elongatd-' fiat -"elements or-- members' '1 face formin'g elements as they are raised and to having slightly inwardly inclined side flanges 1* lower 'them in :an advanced position to progresand iipwardly "curved forward 'end portions'2, so

sively move the surLface forming-elements :oven that the elements may be easily moved overthe the surface of a plastic body of material lupon surface-of a' plasticmaterial without danger-ioi which :they "rest, ='s0 :asto continuously compact digging 'intothe vmaterial"and preventing teady aimiwork thebodyof materialto produce homomanipulation or the de'vice. -Memb'ers 1 "have g'eiiietygin the-body and'to finish-the surface slightly upturned rear end'por'tions so that i The invention still further :comprehends the be free from ridges and unevennes's askthe eleide'a of "providing means for carrying a power ments 1 progressivelyadvanceover the material unit on thedevicefor operating the mechanism to bei'inished. whichrli-fts -and advances'the surface iorming ele- 'The elem'ent's -or members 1 are in-con'tact in-a merits; i I I v lateral direction and each alternate member is 40 It isstill -a further object of the invention to provided-'witha vertical or' upri'gl'i'tmember :4 conprovidea noveldevice in which-alternate surface nected thereto adjacent to the forward 'end and a forming elements are raised and advanced altersimilar member -4 connected thereto adjacent to natelytocompact and work-the'bodyof material therear end. I

upon 'wh'ichfthe surface Tiofrming elements are The members or elements adjacent't'o' the'mem- 4 carriedto produce ihom'ogeniety in the bodygan'd bers having the upright members :are'. provided finish the surface thereof. j c l with upright members 5co'nnected to theimem- It isal'so an object of the inventionto'provide bers 1 at .a point a short distance to-the rear of a novel device {for surfacing and compacting a theiupright member 4 and "are likewise "provided plastic body of material in which meansare'prowith upright members '5 connectedadjacent'to 50 vid'edjfor varying the aniular relation between their rear jendrand a slightdistance to the-rear the-- surface forming elements. Withmeansof of 'theupright member '4". j I I this kind the device is particularly adapted .for Each of the'upstandingqmemberse,4%, 5-and'5 v surfacing a concreteroad or the-:li'ke'where itis is provided adjacent to its uppenend, with an desirable to provide arconvex or=crowned surface. arcuate shaped slot 6 adapted toreceive a .bolt 5 the finished surfaceofthe plastic material will 35 7 passing through the extending or cross-member 8, 8 8 or 8 and the upright members. This permits relative movement between the crossmembers and the upright members when adjusting the upright members relative to each other, after which thetightening of the nuts on the bolts secures the parts in adjusted relation.

Each of the upstanding members 4 is connected with its adjacent upstanding member 4 by a suitable adjusting means, suchas a turn-buckle 9 whereby the angular relation of the longitudinalmembers 1 in a transverse direction may be varied, assuming that the nuts on the have previously been loosened to allow lateral movement of the upright members 4. "After'ad' justing the angular relation, the bolts are then .tightened. v w

Similar cross members 8 8 and 8 and-similarly provided adjustable means, are provided'for the upright members 5, 4 and 5 respectively. By a proper adjustment ofjtheseupright members, the elongatedmembers l:of the device may be so positioned as to give a, convex .or concave surface. to .the plastic material, over which it is moved.

Adjacent to the, ends, and connected by any suitable-means, .tojthecrossemembers 8 and 8 to which are connected.

are vertical members 10, brackets 11 having circular openings 12- therein. Also vertical members. 10. carryingbrackets 11 having -circular openings 12 Land ;si mi1ar to brackets 11, but oppositely mounted, ,are connected adjacentxthe ends of the cross-: members 8 and 8.= They :are likewise adjacent to the vertical members 10.

.Shafts 13 and 14-having ca1n elements 15'and 16 oppositelymounted thereon 'are'rprovided, the cam elements 15 being rotatable in the circular openings 12 in the brackets 1;1,1while thecam elements 16 are rotatable-in the-circular openings 12in thebrackets 11?. the ends of the shafts thereto by pins 18,.are provided to hold, the shafts in operative positionand toiprevent axial displacement of, the-shafts-- MT: 1

A-platform 19' of any desir 71d; construction is mounted on the hubs 20 on the'shafts'l3 and 14, and carriesa motor-21 ,mountedthereonto drive, through the transmission 22and sprocket chain, 23, the sprocket wheel 24"securedto ,the shaft 13.

The shaft 14 isdriven at thesame-speedby the sprocket wheelz 25, securedfto ,it and driven by Collars 17 mounted on way. of a chain 26, ,drivenifrom; a sprocket 27 fixed to theshaft '13.... .l '1

A suitable clutch mechanism is provided in the transmission 22 and'is controllable by the lever 28 for operativelyconnecting the :motive means to the sprocket wheel 24 and shafts 1'3 and 14.3 There -isialso a speedncontrol. mechanism controlled by a hand levery29 forvarying the speed of rotation. of the shafts;13 and 14and the rate of movement of the deviceoventhe' surface of a plastic bodyupon which it rests.

Longitudinal members 30 on opposite sides of the platform 19: are provided ,to. connect the upright members .10 on the "cross members 8 and 8*. Similar longitudinal members .30 are provided to connect the upright me'mberslO on the cross members'fl and 8: These longitudinal members reinforce and brace'the alternate units of-surface forming" elements 1 and the upright members to prevent warping and twisting of the units as the device is'moved over "the surface of a plastic material." I Y f As the shafts13 and 14 are rotated-by the mobolts. 7 .the'center of the cam element 1.5, will isstill fu'rtherrotated to the position '13 and 14 and secured;

tor -21, the cam elements mounted thereon will assume the various positions as clearly shown in the Fig. 4 of the drawings. As shown in position I (in this figure), all of the elongated members are resting upon the surface of the plastic material. As the shaft is rotated, as to position II, to cause rotation of the cam element 16 about the center of the cam element 15, the alternate elongated members 1 connected with the upright members 5 and 5 will be lifted or elevated and advanced ashort distance. A further rotation of the shaft, and likewise cam element 16 about cause a further advancing of such elongated members 1, assho'wn in position III of Fig. 4. As the shaft as shown in position IV of Fig. 4, the shaft and cam element 15 then rotate about the center of the cam element :16 to lift the alternate elongated elements 1 connected to the upright members 4 and 4 -andto cause them to be advanced a short distance; .A further rotation of the shaft and cam element 15;about .thecenter of the cam element 16 causes afurther advancing of these same elements, such as shown in position I of Fig. 4, but advanced a distance equal to the eccentricity of-the cam elements. shaft will cause a successive advancing of alternate elements over the surface of the plastic ma-' terial. to be finished. It ,will'be seen that as these-elongated mem bers are lifted and lowered and advanced over the. plastic material/that they will tamp, compact and work the same into a homogeneous mass aswelly'as :to surface the material so that it will be, free from unevenness and ridges.

By providing means for adjusting the upright;

structions'ywithout departing from the spirit thereof} I Having thus disclosed the invention, I claim: 1.1'A' surfacing device comprising a plurality of surface forming elements, means connecting alternate elements to form units, said-means adapted to hold said elements in contact lateral- 1y, meansfor varying the angular relation between said elements, and means carried by, said elements and connected to said connectingmeans' for alternately lifting and advancing saidunits for progres sively moving said elements and said device over the surface ,of a plastic material to knead and compact the same.

.12 A surfacing device comprising aplurality of surface, forming elements, means connecting alternate elements to form units, cams associated with each of said units, and powermeans carried by said elements for rotating said cams to alternately liftand advancesaid units for progressively advancing said elements and. said device over the surface of a plastic material to knead and compact-the same. v 3. A surfacing device comprising a plurality 01' urface forming elements, means connecting Continual rotation of themounted upon said shaft, said shaft and earns carried by said elements, and power means mounted on said elements and adapted to rotate said shaft and cams to cause said units to be alternately elevated and advanced to progressively move said elements over the surface of a plastic material to knead and compact the same, said elements comprising the moving means for said device.

5. A surfacing device comprising a. plurality of elongated surface forming elements, upstanding members connected to said elements, cross-members connecting alternate upstanding members to form units, said cross members provided with brackets, a shaft, cams oppositely mounted on said shaft and rotatably carried in said brackets, power means mounted on said members and adapted to rotate said shaft and cams to cause said units to be alternately elevated and advanced to progressively move said elements over the surface of a plastic material to'knead and compact the same, said elements carrying said device.

6. A surfacing device comprising a plurality of elongated surface forming elements, means for varying the angular relation between said elements, upstanding members connected to said elements, cross-members connecting alternate upstanding members to form units, said cross members provided with brackets, a shaft, cams oppositely mounted on said shaft and rotatably carried in said brackets, power means mounted on said members and adapted to rotate said shaft and earns to cause said units to be alternately elevated and advanced to progressively move said elements over the surface of a plastic material to knead and compact the same, said elements comprising the means for moving said device.

7. A surface device comprising a plurality of elongated surface forming elements, upstanding members connected adjacent the forward and rear of said elements, cross members connecting alternate upstanding members to form units, said cross members provided with brackets, laterally extending shafts provided with oppositely mounted cam members, said shafts rotatably mounted in said brackets, a platform carried by said upstanding members, and power means mounted on said platform and adapted to rotate said shafts and earns to cause said units to be alternately elevated and advanced to progressively move said elements over the surface of a plastic material to knead and compact the same, said elements carrying said device.

8. A surfacing device comprising a plurality of elongated surface forming elements, upstand ing members connected adjacent the forward and rear of said elements, means for varying the angular relation between said elements, cross members connecting alternate upstanding members to form units, said cross members provided with brackets, laterally extending shafts provided with oppositely mounted cam members, said shafts rotatably mounted in said brackets, a platform carried by said upstanding members, and power means mounted on said platform and adapted to rotate said shafts and cams to cause said units to be alternately elevated and advanced to progressively move said elements over the surface of a plastic material to knead and compact the same.

HENRY G. LYKKEN.

CERTIFICATE OF CORRECTION.

Patent No. 1,988,660. January 22. I935.

HENRY G. LYKKEN.

It is hereby certified that error appears in the printed specification of the above numbered patent requiring correction as follows: Page 2, second column, after line 75, claim 3, insert the words alternate elements to form units, means for vary-; and that the said Letters Patent should be read with this correction therein that the same may conform to the record of the case in the Patent Office.

Signed and sealed this 12th day of March, A D. 1935.

Leslie Frazer Seal) Acting Commissioner of Patents. 

